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John Dalton proposed that all matter is composed of very small things called atoms.
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discovered the electron by experimenting with a Crookes, or cathode ray, tube
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Determined the size of electrons.
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the first to discover that atoms have a small charged nucleus surrounded by largely empty space, and are circled by tiny electrons
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Discovered the nucleus and development an atomic model
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A list shows items. A timeline shows sequence.
Use Timetoast to make dates, milestones, and turning points easier to understand in a clear visual format. Timetoast is a timeline maker for work, school, research, and stories.